I think a rough rule of thumb is that very high earners will pay slightly more than 50% of income of wages on taxes (state and federal) in CA and about 24% of capital gains income on taxes, before various deductions.
But, the big difference in California is that if you inherited property or bought it a long time ago you pay much less property taxes than people who bought homes recently, due to Proposition 13. This means property taxes are not as strong a source of revenue in California compared to other states; making up that difference is partially why other taxes and fees are so much higher in California.
Well, the assessment rule is part of it, but prop 13 also limits the property tax rate as well as the assessments. Even with full-value assessment, California property taxes would be in the bottom half of states due to Prop 13 rate limits alone.
The federal government is a different story though.
AFAIK California tends to bleed wealthy taxpayers, not population as a whole.